p, h3, li {margin-left:2cm;margin-right:2cm}
p, li      {font-size: 16px}
blockquote {
border: outset 8px silver;
padding-left: 5px;
width: 80%;
font-family: Times New Roman;
font-size: 14px;
color: blue;
font-weight: bold;
box-shadow:   0 0 20px black,
  20px 15px 30px yellow,
  -20px 15px 30px lime,
  -20px -15px 30px blue,
  20px -15px 30px red;
}
span.frac {
display: inline-block;
text-align: center;
}
span.frac > sup {
display: block;
border-bottom: 1px solid;
font: inherit;
}
span.frac > span {
display: none;
}
span.frac > sub {
display: block;
font: inherit;
}